<!--
 * @Author: your name
 * @Date: 2021-08-26 15:24:10
 * @LastEditTime: 2021-08-29 19:11:29
 * @LastEditors: Please set LastEditors
 * @Description: In User Settings Edit
 * @FilePath: \vue电商管理平台\vue-e-commerce\src\components\goods\Add.vue
-->

<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false"
      >
      </el-alert>
      <!-- 步骤条 -->
      <el-steps
        :space="200"
        :active="+activeIndex"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!-- 表单 > 菜单栏 -->
      <el-form
        :model="addForm"
        :rules="rules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          tab-position="left"
          v-model="activeIndex"
          :before-leave="beforeTabLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="cateProps"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              v-for="(item, i) in manyTableData"
              :key="i"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="item2"
                  v-for="(item2, i2) in item.attr_vals"
                  :key="i2"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              v-for="item in onlyTableData"
              :key="item.attr_id"
              :label="item.attr_name"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              :on-success="handleSuccess"
              :headers="headersObj"
              list-type="picture"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- 富文本编辑器 -->
            <quill-editor v-model="addForm.goods_introduce" />
            <el-button type="primary" class="btnAdd" @click="addGoods"
              >添加商品</el-button
            >
          </el-tab-pane>
        </el-tabs></el-form
      >
    </el-card>
    <!-- 预览图片 对话框 -->
    <el-dialog title="预览图片" :visible.sync="previewVisible" width="50%">
      <img :src="previewPath" alt="预览图片" class="previewImg" />
    </el-dialog>
  </div>
</template>

<script>
import _ from "lodash";

export default {
  data() {
    return {
      // 控制 步骤条 激活项
      activeIndex: "0",
      addForm: {
        goods_name: "",
        goods_price: "",
        goods_number: "",
        goods_weight: "",
        goods_cat: [],
        pics: [],
        goods_introduce: "",
        attrs: [],
      },
      rules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" },
        ],
        goods_cat: [
          { required: true, message: "请输入商品分类", trigger: "blur" },
        ],
      },
      cateList: [],
      // 级联选择器 配置
      cateProps: {
        expandTrigger: "hover",
        value: "cat_id",
        label: "cat_name",
        children: "children",
      },
      // 参数列表数据
      manyTableData: [],
      // 属性列表数据
      onlyTableData: [],
      // 上传图片的地址
      uploadURL: "http://127.0.0.1:8888/api/private/v1/upload",
      // 上传图片的请求头
      headersObj: {
        Authorization: window.sessionStorage.getItem("token"),
      },
      // 对话框 显示/隐藏
      previewVisible: false,
      // 预览图片路径
      previewPath: "",
    };
  },
  computed: {
    // 三级分类的id
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2];
      }
      return null;
    },
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$axios.get("categories");
      if (res.meta.status !== 200) {
        return this.$message.error("商品分类获取失败");
      }
      this.cateList = res.data;
    },
    // 监听 级联选择器配置 选项选中
    handleChange() {
      this.addForm.goods_cat =
        this.addForm.goods_cat.length === 3 ? this.addForm.goods_cat : [];
    },
    // 监听 tab 切换
    beforeTabLeave(activeName, oldActiveName) {
      if (oldActiveName === "0" && this.addForm.goods_cat.length !== 3) {
        this.$message.error("请先选择商品分类");
        return false;
      }
    },
    // 监听 tab 选中
    async tabClicked() {
      if (this.activeIndex === "1") {
        const { data: res } = await this.$axios.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "many" },
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error("获取动态参数失败");
        }
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(" ");
        });
        this.manyTableData = res.data;
      }
      if (this.activeIndex === "2") {
        const { data: res } = await this.$axios.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "only" },
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error("获取静态属性失败");
        }
        this.onlyTableData = res.data;
      }
    },
    // 图片预览
    handlePreview(file) {
      this.previewPath = file.response.data.url;
      this.previewVisible = true;
    },
    // 移除图片
    handleRemove(file) {
      const filePath = file.response.data.tmp_path;
      const i = this.addForm.pics.findIndex((item) => item.pic === filePath);
      this.addForm.pics.splice(i, 1);
    },
    // 监听 图片上传 成功
    handleSuccess(response) {
      const picInfo = { pic: response.data.tmp_path };
      this.addForm.pics.push(picInfo);
    },
    // 添加商品
    addGoods() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) {
          return this.$message.error("还有必填项未填写");
        }
        // lodash 提供的深拷贝方法
        const form = _.cloneDeep(this.addForm);
        form.goods_cat = form.goods_cat.join(",");
        // 处理动态参数
        for (let item of this.manyTableData) {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(" "),
          };
          this.addForm.attrs.push(newInfo);
        }
        // 处理静态属性
        for (let item of this.onlyTableData) {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals,
          };
          this.addForm.attrs.push(newInfo);
        }
        // 压入无法深拷贝的数据
        form.attrs = this.addForm.attrs;
        form.pics = this.addForm.pics;
        const { data: res } = await this.$axios.post("goods", form);
        if (res.meta.status !== 201) {
          return this.$message.error("添加商品失败");
        }
        this.$message.success("添加商品成功");
        this.$router.push("/goods");
      });
    },
  },
  created() {
    this.getCateList();
  },
};
</script>

<style scoped>
.el-checkbox {
  margin: 0 5px 0 !important;
}

.previewImg {
  width: 100%;
}
/* // 富文本编辑器下面的添加按钮 */
.btnAdd {
  margin-top: 15px;
}
</style>
